Automatic gas-regulator.



G. H. MURRAY. AUTOMATIC GAS REGULATOR. APPLICATION FILED AUG. 10, 1909.

Patented Dec. 28, 1909.

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GEORGE E. MURRAY, 01? BRISTOL, VERMONT.

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Specification of Letters Patent.

Patented-Dec. 28, 1909.

lpplication'filed August 1 0, 1909. Serial No. 512,128.

To all it may concern: v

. Be it known that I, GEoaeE H. MURRAY,

a citizen ofthe United States. residing at cured to a gas jet.

meral 1 desi Bristol, in the county of Addison and State of Vermont,have invented certain new and useful Improvements in Automatic Gas--Regi 1lators, of which the following is a specification.

' This invention relates to new and useful improvements in automatic gasregulators.

without the valve having been closed the device would automaticallyoperate to close the same.

' Another object .is to provide a means whereby a thermostat may beadjustably se- With these and other objects in view, the presentinvention consists in the combination and arrangement of parts as willbe hereinafter more f ullydescribed and particularly pointed out in theappended claims, it being understood that changes in the specificstructure shown and described may bemade within the scope of the claimswithput departing from the spirit of the inven- In the drawings forminga part of this specification, and in which like numerals of referenceindicate similar parts in the several views,- Figure 1. shows a sideelevation of an automatic gasregulator embodying my invention. Fig. 2shows a front elevation thereof. Fi 3 shows anenlarged detached detail 0the thermostat. Fig. 4 shows an enlarged central sectional view of thethermostat holding member. V

Where a gas flame is employed for illuminating or heatingpurposes, itquite frequently happens that through some cause the flame becomeeextinguished. The gas continuing 'to escape is likely to fill theapartmentto the danger of the occupants. In In present inventionI"provide a light, readi yadjustable means whereby upon theextinguishment of the flame the flow of gas is automatically-checked:

In the accompanying drawings, the nuprovided with the gas jet 1connected to the supply ipe by means of the elbow-2. Secured to t 1s jet1' is.,the gas tip 2' the ates a suitable gas supply pipe valve 3.

At a suitable point within the pipe 1 I provide the valve 3' to the stem4- of which I secure the arm 5 carrying the weight head 5 provided withthe recurved en aging ear 6, as clearly disclosed in Fig. 1. ecured tothis supply pipe 1 is the ear 7 carrying the pin ,7 Wl'llChpivotally-supports a detent in the form ofa dog 8 havin the extendinglip 8 arranged to be held be ow the ear 6 to secure the weighted arm inone of its extreme positions. This detent performs the function of anarmature in that the same is provided with the armature bar 9. Workingagainst this armature 9 is the co l sprlng -9' insuring the armaturebeing yleldmgly held, the outward travel of the armature be-,

ing limited by the stop shoulder 11' contacting with a suitable base 10.The base 10 which carries the ear 7 also supports the electromagnet 10held for co-actlon with the armature, in the usual manner. At a suitablepoint I provide the batteries 35. a conductor 37 being led from one poleof the battery to one terminal of the electromagnet, as disclosed inFig. 1.

The weight 5' is arranged to drop upon the release of the detent toclose the valve 3', and positioned within the path of this travelingweight 5 is the insulated yieldingly-held contact making arm 12 which isarrangedtoobe in normal engagement with the stationary arm 11 alsoinsulated, these arms 11 and 12 being secured to the supply pipe 1. Theconstruction is such that when the traveling weight 5' drops the samecontacts with the yieldingly held member 12 to carry the same out ofcontact with the .stationary arm 11. A conductor 38 1s led from theyieldingly held member 12 to the remaining post or contact point of theelectromagnet 10. I u

Adjustably secured to the gas et or bracket 1, is the insulatedclampingcollar 17 which is pinchedto this gas et or bracket by means ofthe clamp screw 40. This clamp collar carries the spher cal head 16 uponwhich is movably clamped thesleeve 14 which is in-the form .of twosimilar members held" together by means of the screw 14' sot-hat thisclamping sleeve may be "secured to the spherical head 16. Su1tablysecured to this clamping sleeve 1s the preferably metallic housing orcasing 13 from the bottom 13' of which extends the centrally held pin29.' Secured to thiscasing is the binding post 18 and at a suitablepoint opposite is the insulated binding post.

20. An electric conductor 36 extends from the-battery 35 to theinsulated binding post 20.- Extendingfrom this insulated binding post 20is the conductor 21 which is led to an insulated switch'contact'22 inthe path of the switch blade 24 mounted upon the pin 24, this switchblade also being insulated from the casing13. Extending from thisSwitchblade 24 is the conductor 25 connected to a stationary insulatedcontact lug 26. Secured to the hou'singor casing 13 and in contact withthe binding post .18, is thethermostat 33 of any approved constructionwhich at'its free end by means of a pin 32 is connected to a link 31 andthis link 31 by means of the pin 30 is fastened to the pivotally heldtraveling contact maker 28 held to the pin 29, this traveling contactmaker having the contact lug 27 arranged for co-action withthestationary contact 26. A suitable conductor 39 extends from thebinding post 18 to the stationary switch arm 11.

As disclosed,'-the switch blade 24 is in the path of the lower end ofthe traveling contact maker 28 so arranged that when the thermostatactuates this traveling member 28 the switch blade 24. will be thrown,upon the switch contact 22.

Owing to the swivel connection between the clamp collar and thethermostat housing,

In adjusting the instrumentalities the operator first throws the switchblade 24: oil? of the contact 22. The circuit is then broken. The weight5 is then carried upward .to open the valve 3', the weight being held inan upward position in securing the ear 8 below the lip 6. The valve 3 isthen opened and the gas ignited. This results in the thermostatelongating to actuate the traveling member 28 to carry'the contactmakers 26 and 27 apart to break the circuit at that point. As thecontact maker 28 is advanced it engages the switch blade 24- to carrythe same intocontact with the member 22 to close the circuit at thispoint. The switch members 11 and 12 in this position of-theinstrumentalities are in closed contact. .The energizing circuitis,however,'open in that the terminals 26 and 27 are separated. Theinstrumentalities being thus arranged with the flame burning, should theflame be sud-v denly extinguished the thermostat .33. will contract sothat the terminals 26' and 27 will again be brou ht into contact. Thiswill result in entire y closing .the circuit and eneling contact maker,a switch contact in the tomatically operating a valve is that thethermostat carrying case may be tilted over and against the burner 2 sothat where a very small night flame is used, should the flame becomeextinguished the valve will be automatically closed. This attachment maybe effected in any suitable workmanlike manner. The device is simple andinexpensive of construction and both durable'and eflicient. inoperation, and the adjustments may be made with ease, accuracy, anddespatch.

Having thus described my said invention what-I claim as new and desireto secure by United States LettersjPa-tent is:

i 1. .The combination in a device of the character described, of a gassup, ly pipe having a burner, of a valve within s id pipe, a. weightedstem to form a gravity actuated valve, a detent engaging said weightedstem, an electromagnet to operate said detent, a normally closed switchoperated through contact "with said weighted stem, a thermostat, atraveling contact makerflsecured to' said thermostat, a stationarycontact maker for co-action with said traveling contact maker, a switchblade actuated by said trav-v path of said blade, an electric source ofenergy, and a conductor connecting said instrumentalities in circuit asand for the purpose set forth.

. 2. The combination in a device of the character described of a gassupply pipe having a burner, of a valve within said pipe, an armextending from said valve, a weight carried by said arm said weighthaving a projecting car, a pivotally held armature provided with anextending. lip engagin said car, a normally closed switch operated bythe release of said'weighted arm, a ther- .mostat, a traveling contactmaker secured to 1.15

said thermostat, a-stationary contact-maker for co-action with saidtraveling contact maker, a switch blade actuated by said travelingcontact maker, a switch contact in vthe 'path of said blade, an electricsourceof .en-

ergy, ,and a conductor connecting said instrumentalities in circuit, asand for thepurpose set forth.

3. In a device of the character described, the combination with a supplypipe having a burner, of a valve within'said supply pipe, a weightedstem extending from saidvalve to provide afgravity actuated valveoperating means, a detent engaging Sflid'WGl hted. stem. anelectromagnet to operate sai de-.

tent, a normally closed switch operated by the fall of said weightedstem, a thermostat, means to adjustably secure said thermostat to saidsupply pipe, a traveling cont-act maker secured to said thermostat, astationary contact maker for co-act-ion with said traveling contactmaker, a switch blade actuated by said traveling contact maker, a switchcontact in the path of said blade, an

electric source of energy, and a conductor magnet to'operate saiddetent, a normally,

closed swit ch operated by the release of said weighted stem, anadjustably held thermostat,-a traveling contact maker secured to saidthermostat, a stationary contact maker 0 U i maker, a switch bladeactuated by said traveling contact maker, a switch contact in the pathof said blade, an electric source of en erg a conductor extending fromone pole of said electric source and connected to said switch contact,an electric conductor extending from said'switch blade to saidstationary contact, an electric conductor extending from said travelingcontact maker and se cured to one member of said normally closed switch,an electric conductor extending from the remaining member of saidnormally closed switch and to one terminal of ductor extending from theremaining terminal of said electromagnet to the remaining pole of saidsource of supply.

In testimony whereof'I afiix my signature, in presence of two witnesses.

GEORGE H. MURRAY. Witnesses FREDERICK H. PALMER, SERAPH C. SNEDEN.

said electromagnet, and an electric con for co-action with saidtraveling contactzs

